331 CUBIC INCHES 500 HP BOSS CRATE ENGINE
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Ford Racing developed the Z331P crate engine to be used in high performance applications where a high reving 500+ horsepower engine is needed. The engine is perfect for vintage racing or open track Mustangs that use a traditional 289 or 302 type small block Ford. The engine is built around a BOSS 302 8.2" deck block with a short 3.100 stroke and roller camshaft. The Z331 delivers performance thats reminiscent of the Trans Am days.
515 horsepower @ 7,100 rpm
415 lb.ft. torque @ 5,300 rpm
- Engine Type: 302 based small block ford
- Displacement (cu in): 331
- Bore x stroke (in): 4.125" bore x 3.100" stroke
- Block: Boss 302 8.2" deck
- Crankshaft: SCAT Forged Steel
- Connecting Rods: SCAT forged steel H-beam connecting rods
- Pistons: Forged Mahle w/ floating wrist pins
- Camshaft Type: Solid Roller
- Camshaft Lift (in): .525"
- Camshaft Duration (@.050 in): 258/266
- Cylinder Heads (p/n M-6049-Z304P): Ford Racing Aluminum Z Cylinder Heads
- Valve size (in): 2.08 intake 1.60 exhaust
- Compression Ratio: 11.9:1 (nominal)
- Rocker Arms: Roller Rockers
- Rocker Arm Ratio: 1.65:1
- Vibration Damper – Ford Racing SFI Approved
- Valve covers: Ford Racing "BOSS" cast aluminum polished finish
- Oil pan: high performance rear sump 7 quart capacity with windage tray / scraper
- Water pump: Edelbrock hi-performance
- Distributor: not included
- Recommended Fuel: Premium Leaded 110 octane minimum
- Ignition timing: 32 degrees total
- Maximum recommended rpm: 7,000
- Balanced: Internal. Use neutral balance flywheel
- Engine power rating based on long tube headers, Parker Funnelweb Intake w/ 750 Demon carb and 1" carb spacer
- Depending on your application, a different timing cover, water pump, performance oil pan and pickup may be required. See installation notes
- Race Application - No Warranty INSTALLATION NOTES: See engine installation and tuning tips. Some or all of the following items may need to be changed from your original engine or modified for proper installation:
- A different performance oil pan and pickup may be required for your application. Call the Techline at (800) FORD788 for more information.
- The timing chain cover will work with most regular rotation water pumps.
- Fuel pump eccentric M-6287-B302 installed, allows use of mechanical fuel pump
- A standard rotation water pump is installed on the engine. Other applications may require different water pumps and timing chain covers
- Intake gasket Cometic IR340SP4060KF recommended
- Firing order 1-3-7-2-6-5-4-8.
- Built with current available parts. Photo and specs may vary.
- Shipping weight approximately 465 lbs See Also...
- Crate Engine Build-Up
- Crate Engine Warranty
- Engine Tips & Specs
- Crate Engine Catalog
Part Type
Engine: Complete Engines
Warranty Availability
Not Available
Package Dimensions
36" x 39" x 36"
Package Weight
529 lb(s)
UPC Code
756122108581
Country of Origin
United States